A silly speaker question

[fishyfishfish]

Hi all! I picked up a Mark III simul-class with the EV 200 watt speaker, and while when I drive the hell out of it at band volume and it sounds great, when I use it at lower volumes it is sounding harsh and hard to dial in. I can put the EV in my 1X12 Mesa cab for bigger gigs, but looking for something not as raspy at church/in ear volumes that can take abuse of a loud, un-miked outdoor gig. Thanks in advance!

 

[boogiemon]

Try plugging the ev into one of the 4ohm jacks. That will cut the power back & on my MIII has the effect of smoothing out the gain channel.

Hi all! I picked up a Mark III simul-class with the EV 200 watt speaker, and while when I drive the hell out of it at band volume and it sounds great, when I use it at lower volumes it is sounding harsh and hard to dial in. I can put the EV in my 1X12 Mesa cab for bigger gigs, but looking for something not as raspy at church/in ear volumes that can take abuse of a loud, un-miked outdoor gig. Thanks in advance!

 

[MrMarkIII]

I have the Graphic and use it to mellow out the tone at bedroom volume.
Them roundy things on the front panel work, too.

 

[fishyfishfish]

Thanks I'll try the roundy things ! :lol:

 

[GD_NC]

Try plugging the ev into one of the 4ohm jacks. That will cut the power back & on my MIII has the effect of smoothing out the gain channel.

Hi all! I picked up a Mark III simul-class with the EV 200 watt speaker, and while when I drive the hell out of it at band volume and it sounds great, when I use it at lower volumes it is sounding harsh and hard to dial in. I can put the EV in my 1X12 Mesa cab for bigger gigs, but looking for something not as raspy at church/in ear volumes that can take abuse of a loud, un-miked outdoor gig. Thanks in advance!

Better yet try a non-EVM extension cab with it. Run both at 4 ohms. Adding a 1x12 really seems to improve my combo at lower volumes and gets rid of that EVM harshness. A Thiele is ideal, but a standard 1x12 works too.

 

[boogiemon]

This has the similar effect of raising the impedance ratio that the amps sees that also happens when you plug a single speaker (ev in this case) into one of the 4 ohm jacks. All the ev's that i've tested have an impedance rating of <6ohms compared to the C90 which is typically above 7. If you mix the two by running each of them into one of the 4 ohm jacks you'll still see a relative impedance increase.

Try plugging the ev into one of the 4ohm jacks. That will cut the power back & on my MIII has the effect of smoothing out the gain channel.

Hi all! I picked up a Mark III simul-class with the EV 200 watt speaker, and while when I drive the hell out of it at band volume and it sounds great, when I use it at lower volumes it is sounding harsh and hard to dial in. I can put the EV in my 1X12 Mesa cab for bigger gigs, but looking for something not as raspy at church/in ear volumes that can take abuse of a loud, un-miked outdoor gig. Thanks in advance!

Better yet try a non-EVM extension cab with it. Run both at 4 ohms. Adding a 1x12 really seems to improve my combo at lower volumes and gets rid of that EVM harshness. A Thiele is ideal, but a standard 1x12 works too.

 

[MrMarkIII]

"...This has the similar effect of raising the impedance ratio that the amps sees that also happens when you plug a single speaker (ev in this case) into one of the 4 ohm jacks. All the ev's that i've tested have an impedance rating of <6ohms compared to the C90 which is typically above 7. If you mix the two by running each of them into one of the 4 ohm jacks you'll still see a relative impedance increase..."

Any speaker rating, i.e., this one is 8 ohms, that one is 16 ohms, is a nominal rating. The actual impedance will change constantly when the speaker is operating, and varies according to the frequencies being reproduced, amplifier damping factor, and other variables.
While a single 8 ohm speaker in a 4 ohm jack will increase the load, if you run an 8 ohm speaker out of each of the 4 ohm jacks, the total (nominal) load will be 4 ohms (two x 8 ohms in parallel). This would be a decrease of the usual single speaker load of 8 ohms, not an increase. All parallel loads result in a net decrease in the total load.
Hope this helps.

 

[boogiemon]

Well yeah, but i was trying to say was that adding a speaker w/a higher impedance to the mix (running it in parallel w/the EV) should raise the *average* impedance assuming the amp is looking for 4 ohms instead of 8 as it would be w/only one speaker.

"...This has the similar effect of raising the impedance ratio that the amps sees that also happens when you plug a single speaker (ev in this case) into one of the 4 ohm jacks. All the ev's that i've tested have an impedance rating of <6ohms compared to the C90 which is typically above 7. If you mix the two by running each of them into one of the 4 ohm jacks you'll still see a relative impedance increase..."

Any speaker rating, i.e., this one is 8 ohms, that one is 16 ohms, is a nominal rating. The actual impedance will change constantly when the speaker is operating, and varies according to the frequencies being reproduced, amplifier damping factor, and other variables.
While a single 8 ohm speaker in a 4 ohm jack will increase the load, if you run an 8 ohm speaker out of each of the 4 ohm jacks, the total (nominal) load will be 4 ohms (two x 8 ohms in parallel). This would be a decrease of the usual single speaker load of 8 ohms, not an increase. All parallel loads result in a net decrease in the total load.
Hope this helps.

 

[MrMarkIII]

Here's a calculator for speaker impedance matching:

http://colomar.com/Shavano/impedance_proc.php

Values entered horizontally are for series connections.
Parallel connections are entered vertically.
Be sure to show all your work. This will be on the final. :lol: